Husqvarna R419TsX AWD Workshop Manual
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Husqvarna R419TsX AWD Workshop Manual

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Workshop manual
R419TsX AWD, R420TsX AWD
English
914 - 003 - 28.03.2019

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Summary of Contents for Husqvarna R419TsX AWD

  • Page 1 Workshop manual R419TsX AWD, R420TsX AWD English 914 - 003 - 28.03.2019...

  • Page 2: Table Of Contents

    Contents 1 Introduction 8 Function overview 1.1 General..............3 8.1 Product overview..........21 1.2 Document description..........3 8.2 Serial numbers on the product......21 1.3 Target group............3 8.3 Engine..............22 1.4 Safety..............3 8.4 Transmission............22 1.5 Revisions..............3 8.5 Steering..............22 1.6 Servicing tools............3 8.6 Cutting deck............

  • Page 3: Introduction

    1 Introduction 1.1 General This publication covers Husqvarna ride-on lawn mowers R419TsX AWD, R420TsX AWD from model year 2019. Workshop manuals are available for models that are no longer sold. 1.2 Document description This manual gives a full description of how to do maintenance and repair on the product.

  • Page 4: Safety

    2 Safety 2.1 General safety instructions • Use protective gloves when you do work on or near the blades. The blades are sharp and can give cut WARNING: Read the warning instructions that injuries. follow before you use the product. •...

  • Page 5: Display

    2.5 Display The display on the instrument panel shows information of the status of the product. 2.6 Symbols on the product 1. Slope indicator 2. Hydraulic temperature indicator WARNING: Careless or incorrect use can 3. Oil pressure indicator result in serious injury or death to the 4.

  • Page 6: Transport Safety

    Never cut grass across a slope. Do not cut grass on ground that slopes more than The blades are engaged. 10°. The blades are disengaged. Never carry passengers on the product or equipment. Servicing position for the cutting deck. Move forward. Operation position for the cutting deck.

  • Page 7: To Put Supports Below The Product

    3. Apply the parking brake. 4. Lock the product with the Husqvarna Connect app. 1. Park the product on a hard and level ground. 5. Lower the cutting deck to the mow position.
  • Page 8 5. Put the rear supports below the rear transmission frame. 8 - Safety 914 - 003 - 28.03.2019...

  • Page 9: Prepare And Do Servicing On The Product

    3 Prepare and do servicing on the product 3.1 Pre delivery inspection Complete the sales certificate and the customer records. Write the serial number in the operator's manual and confirm the delivery service in the service book. 914 - 003 - 28.03.2019 Prepare and do servicing on the product - 9...

  • Page 10: Assembly 4.1 Battery

    Charge the battery at 12V, maximum 3A for 4 hours. 1. Attach the 4 screws. Servicing Use a Husqvarna battery charger. Refer to tools on page 19 . 4.2 To assemble the steering wheel 1. Install the steering wheel with steering column tube onto the steering column.

  • Page 11: Tire Pressure

    4. To adjust the seat springs, move the 2 rubber stops 5. Set the lift lever for the cutting deck in the mow below the seat as given in the illustration. Put the 2 position. rubber stops in the front, middle or rear holes below the seat.

  • Page 12: To Remove The Cutting Deck

    10. Push the lock handle down. 3. Hold the front edge of the cutting deck and pull forward while you hold the lock handle. Pull the cutting deck to the end position. 11. Set the lift lever for the cutting deck in the transport position.

  • Page 13: To Adjust The Parallelism Of The Cutting Deck

    4.10 To adjust the parallelism of the cutting 8. Loosen the locknuts on the lift stay. deck 1. Park the product on hard level ground. 2. Apply the parking brake. 3. Move the weight transfer lever down. 9. Turn the adjustment nut on the lift stay to adjust the length of the lift stay.

  • Page 14: To Do A Check Of The Transmission Oil Level

    12. Use the middle hole (A) on the frame in the cutting 17. Turn the adjustment screw (B) on the cutting height deck. chain until the bearing wheel (C) touches the lever(D). 13. Tighten the locknuts on the height adjustment stay. 18.
  • Page 15 WARNING: Do not use the fuel tank as a support area. CAUTION: Incorrect type of fuel can result in engine damage. The engine runs on gasoline with a minimum octane rating of 91 RON (87 AKI), not mixed with oil. We recommend biodegradable alkylate gasoline.

  • Page 16: Function Test

    5 Function test 5.1 Operation conditions These conditions are necessary to start the engine: • The operator is in the seat. • The parking brake is applied. • The drive of the blades is disengaged. The engine must stop in these situations: •...

  • Page 17: Maintenance

    6 Maintenance 6.1 Maintenance schedule for the workshop 1. PREPARATIONS First serv- Maintenance interval in hours Do a check of the battery. Do a check of the blades. Make sure that the hydraulic hoses and couplings are clean and not damaged. Do a check of the belts and pulleys.
  • Page 18 3. TRANSMISSION, CONTROLS AND DRIVE SYSTEM First serv- Maintenance interval in hours Do a check of/adjust front and rear wheel speed, AWD models only Techni- Do a check of the oil in the transmission and fill if it is necessary. Refer to cal data on page 72 .

  • Page 19: Servicing Tools

    7 Servicing tools 7.1 Servicing tools Optical tachometer 502 28 80-01 Adjustment tool for wheel speed 578 92 62-01 Battery charger (EU) 580 35 52-01 Tachometer 502 71 14-01 7.2 Optical tachometer Then divide the read value with the number of tape pieces to get the accurate rpm.
  • Page 20 5. Press and hold the measuring button on the side of the instrument. Point the measuring laser beam at the object and the reflection tape. The display automatically illuminate after 1-2 seconds. 6. Release the measuring button to stop the measuring procedure.

  • Page 21: Function Overview

    8 Function overview 8.1 Product overview 9 10 11 12 13 14 15 16 17 8.2 Serial numbers on the product 1. Forward drive pedal 2. Rearward drive pedal The engine serial number (A) is found on the left side of 3.

  • Page 22: Engine

    8.3 Engine The illustration shows the rear transmission from above. To move the product without the rear transmission The product has an air-cooled engine from or . operation engaged there is a hydraulic bypass valve. Information about engine repairs is not given in the The bypass valve is operated with a control behind the workshop manual.

  • Page 23: Cutting Deck

    8.6 Cutting deck The product cuts satisfactorily in small spaces because of the front attached cutting deck. The Combi Deck operates with BioClip or rear discharge. When the BioClip plug is removed, the cutting deck ejects the grass rearward. 914 - 003 - 28.03.2019 Function overview - 23...

  • Page 24: Repair Instructions

    9 Repair instructions 9.1 Chassis 9.1.1.3 To replace the storage rails on the engine cover 1. Remove the screws on the 4 loops and remove the 9.1.1 To remove the covers loops. 9.1.1.1 To open the engine cover 1. Fold the seat forward. 2.
  • Page 25 9.1.1.5 To remove and install the side cover of the 3. Remove the 3 screws and remove the equipment cutting deck frame cover. To remove and 1. Remove the cutting deck. Refer to install the front cover of the cutting deck on page 24 . 2.
  • Page 26 9.1.1.9 To remove and install the left footrest plate 9.1.1.12 To remove and install the inner right side cover To remove To remove 1. Remove the frame tunnel cover. Refer to 1. Remove the top right side cover. Refer to and install the frame tunnel cover on page 25 .
  • Page 27 9.1.1.13 To remove and install the transmission cover 9.1.1.16 To remove and install the intermediate pulley cover 1. Remove the 2 screws and remove the transmission cover. 1. Remove the right and the left footrest plate. Refer to To remove and install the right footrest plate on page 25 .
  • Page 28 3. Hold the front cover of the steering column in a 9.1.1.19 To remove and install the rear cover of the vertical position and lift it. steering column 1. Remove the frame tunnel cover, the footrest plates and the front cover of the steering column. Refer to To remove the covers on page 24 .
  • Page 29 9.1.2.2 To adjust the throttle cable WARNING: Do not park the product on a grass slope when you do a check of the Note: The throttle cable looks different on different parking brake. engine models. 2. Push the parking brake pedal (A) down. 1.
  • Page 30 9.1.3.3 To lubricate the parking brake cable 6. Remove the screws on the wheel hub. 1. Remove the frame tunnel cover and the left side To remove the covers on page 24 . cover. Refer to 2. Push the rubber casings (A) in the direction of the ends of the parking brake cable.
  • Page 31 3. Put a container below the couplings of the hydraulic 10. Remove the ball joint for the speed control (A). hoses. 4. Disconnect the hydraulic hoses from the couplings below the product. 5. Put supports below the product in front of the articulated steering.
  • Page 32 15. Remove the snap ring and washer from the inner 9.1.5.3 To assemble the pivoting rear axle groove on the pivoting rear axle (B). 1. Put the axle into the bushings. 16. Pull out the pivoting rear axle from the rear. Use a Note: Make sure that the hole on the axle points slide hammer or a puller if it is necessary.

  • Page 33: Propulsion System

    To remove and install the engine 1. Do steps 1–11 in install the engine cover on page 24 on R419TsX AWD on page 33 . 2. Disconnect the battery terminals (A), open the strap 2. Disassemble the pivoting rear axle. Refer to (B) and remove the battery.
  • Page 34 5. Loosen the clip that holds the throttle cable and, if 8. Remove the nuts (A) that hold the heat shield on the attached, the choke cable. Disconnect the cables exhaust pipe and remove the heat shield. from the carburetor casing. 6.
  • Page 35 13. Remove the 4 engine screws. 9.2.2 To remove and install the engine on R420TsX AWD To remove and 1. Remove the engine cover. Refer to install the engine cover on page 24 2. Disconnect the battery terminals (A), open the strap Risk of sparks (B) and remove the battery.
  • Page 36 3. Disconnect the 5 electrical connectors from the 5. Remove the hose clamps adjacent to the fuel filter engine. and pull the fuel hose down. A small quantity of fuel can come out of the hoses or the filter. 6. Disconnect the fuel return hose. 7.
  • Page 37 9. Remove the exhaust pipe. 10. Remove the spring on the belt tensioner and lift 9.2.3 To remove the PTO clutch transmission belt from the belt tensioner. 1. Hold the spacer (A) below the PTO clutch (B) with a wrench. To remove the PTO 11.
  • Page 38 4. Put a M14X180 screw (E) in the PTO clutch to 8. Fill the oil through the hole that the dipstick sits in. loosen the belt pulley and PTO clutch from the Fill the oil slowly. engine shaft. Hold the top of the belt pulley (D) with Note: See Technical data on page 72 for the types a pipe wrench if it is necessary.
  • Page 39 3. Remove the air filter. 10. Turn the oil filter counterclockwise to remove it. a) For model R419TsX AWD. 4. Use a brush to remove grass and dirt from the air filter, or replace the air filter with a new air filter.
  • Page 40 Front wheel speed must be 0.95-1 of the rear wheel 3. Make sure that the wheels are parallel to the speed. adjustment tool for wheel speed. Note: Do not turn the steering wheel during this Note: The difference between the wheel speeds is larger procedure.

  • Page 41: Electrical System

    9.3 Electrical system 9.3.1 Electrical system overview 1. Battery 11. Buzzer 2. Fuel sensor 12. Power outlet 3. Operator presence control (OPC) 13. PTO button 4. Display 14. Power switch for the power outlets 5. Weight transfer sensor 15. Power switch for the headlights 6.
  • Page 42 9.3.2 Electrical diagram Husqvarna PTO Switch Rider 400 Series Hydraulic Fuse 10A Oil pressure Diagnostic Engine Fuse 20A Chassis Dash temp sensor Briggs&Stratton Kawasaki X 24 X 28 1 2 3 4 5 1 2 3 4 5 6 7 8 9...
  • Page 43 3. Fully press and release the parking brake 10 times. 4. Adjust the microswitch until it clicks when the parking brake is pushed approximatley 40 mm / 1.5 4. Make sure that the servicing indicator symbol on the display is not shown. Note: Remove the spring for the parking brake cable to make it easier to get access to the microswitch.
  • Page 44 9.3.8 To do a check of the start solenoid 9.3.9 To disassemble and assemble the start solenoid 1. Measure the voltage on the terminals (A and B) on the battery. Make a note of the voltage. 1. Disconnect the red cable on the positive terminal of the battery (A).

  • Page 45: Fuel System

    9.4 Fuel system 10. Disconnect the fuel sensor connector. 9.4.1 To remove the fuel tank WARNING: Gasoline is very flammable and dangerous for the environment. Make sure to prevent fire and spill. 1. Remove the frame tunnel cover, the left footrest To remove plate and the fuel tank cover.

  • Page 46: Hydraulic System

    3. Pull off the fuel filter from the hose ends. A small 5. Push the hose clips against the fuel filter. quantity of fuel can leak. 4. Push the new fuel filter into the ends of the hoses. Apply liquid detergent to the ends of the fuel filter to make the connection easier.
  • Page 47 Pressure to the hydraulic system is given by the pump of CAUTION: Oil leakage can cause damage to the drive system. A pressure valve sets the system the transmission and make it wear it out faster. pressure to a maximum limit of 30 bar/435 PSI. There is a filter in the hydraulic tank for the suction pipe Repair oil leaks immediately.
  • Page 48 9.5.8 To replace the oil in the front and rear 9.5.9 To replace the hydrostatic transmission filter hydrostatic transmissions WARNING: Transmission oil is dangerous to your skin. Clean spills with soap and water. WARNING: Transmission oil is dangerous to your skin. Clean spills with soap and water. WARNING: Used oil and filters are dangerous to the environment.
  • Page 49 3. Fill the new hydraulic oil filter with oil. Refer to 9.5.11 To replace the hydraulic oil cooler Technical data on page 72 . 1. Open the engine cover. 4. Lubricate the seal of the new hydraulic oil filter with 2.
  • Page 50 6. Remove the 4 screws that hold the hydraulic oil 4. Heat up the thermostat sensor with a hot air gun. cooler. 5. Replace the thermostat sensor if the hydraulic oil cooler does not start when the thermostat sensor is at the temperature of 70ºC.
  • Page 51 5. Make sure that the clutch valves are closed. 9.5.14 Transmissions 9.5.14.1 To disassemble the front transmission Do not disassemble the tool frame. To keep the hydraulic system Obey the instructions in clean on page 46 . CAUTION: Hold the hydraulic connection nuts with a wrench to prevent damage to the pipes or elbow nipples.
  • Page 52 6. Disconnect the hydraulic pipes from below the front 10. Remove the 5 screws that hold the front transmission and attach protective plugs. transmission and lower the front transmission. To remove 7. Remove the left footrest plate. Refer to and install the left footrest plate on page 26 8.
  • Page 53 3. Attach the front speed adjustment rod. 4. Remove the filter lid and pull out the filter. Replace Technical data on page 72 . the filter. Refer to 5. Make marks on the hydraulic hoses to make it easier to connect them correctly when you assemble them. 4.
  • Page 54 10. Remove the clutch control. CAUTION: Hold the connection nut with a wrench to prevent damage to the pipes or the elbow nipples. 1. Assemble the rear transmission in opposite sequence in relation to disassemble. See disassemble the rear transmission on page 53 . 2.
  • Page 55 5. Wind insulating tape around the input shaft to 3. Put a screwdriver between the seal and the shaft, prevent damage to the new seal from splines and and remove the seal out of the shaft housing. A grooves. Wind from the bottom and continue to the small quantity of oil can leak out.
  • Page 56 To disassemble and 9. Assemble the wheel. Refer to 5. Remove the locking spring and the ball joint (A) on assemble the wheel hub on page 30 . the rear hydrostatic transmission cable from the arm. Remove the rear clamp(B). 10.
  • Page 57 4. Attach the front cable clamp for the hydrostatic 11. Put the locking spring into the hole (A) and push it transmission. around the ball joint shaft (B). 12. Tighten the locknut for the rear ball joint. To remove 13. Attach the frame tunnel cover. Refer to and install the frame tunnel cover on page 25 .

  • Page 58: Cutting System

    9.6 Cutting system 3. Start the engine and give it full throttle. 4. Loosen the locknut (A) on the transmission 9.6.1 To put the cutting deck in the servicing adjustment shaft. position To attach the cutting deck on 1. Do the steps 1–7 in page 11 .
  • Page 59 9.6.2 To put the cutting deck in mow position 7. Adjust the weight transfer if the ground pressure is not between 12 and 15 kg (26.5-33 lb). Refer to 1. Hold the front edge of the cutting deck (A) with one adjust the weight transfer of the cutting deck on hand.
  • Page 60 6. Move the end of the chain tension spring (A) from 10. Pull the weight transfer forward into the steering the screw (B). column to the left of the central steering unit (A). 7. Remove the screw (B) and nut (C) for the chain tension spring.
  • Page 61 3. Measure the distance between the hook and the 5. Turn the adjustment screw (B) on the cutting height front end of the spring (Y). The distance must be chain until the bearing wheel (C) touches the 110 mm. Adjust the nuts of the front end of the lever(D).
  • Page 62 3. Remove the screws that hold the pulley. Lock the 7. Remove the protective washer. blade with a wooden block. 4. Remove the pulley. Use a puller if it is necessary. 8. Make a mark on one end of the shaft. Push out the shaft with a puller.

  • Page 63: Equipment Frame

    4. To balance the blades put a rod horizontally in a 6. Remove the pin to remove the chain from the vise. equipment frame. 7. Remove the master link (A) on the cutting height chain. 5. Put the center hole of the blade on the end of the rod.
  • Page 64 6. Make sure that the steering wheel is in the center position when the rear wheels are in center position. CAUTION: Do not tighten the cables too much. If not, reset the chain on the steering sprocket on the steering column or adjust the steering cable. 1.
  • Page 65 4. Disconnect the hydraulic pipes (A) on the central 5. Remove the screws that hold the lower end of the To keep steering unit. Obey the instructions given in central steering unit (B). the hydraulic system clean on page 46 . 6.

  • Page 66: Belts

    9.9 Belts 9.9.1 Belt overview 9.9.2 To lubricate the belt adjuster Engine pulley to Transmission Belt 1 transmission pul- The belt adjuster must be lubricated regularly with a belt good quality molybdenum disulphide grease. PTO to inter- To remove 1. Remove the lower belt cover. Refer to Belt 2 Main belt mediate pulley...
  • Page 67 9.9.3 To remove and install the transmission belt 7. Loosen the spring on the tension pulley of the main belt. To remove 1. Remove the lower belt covers. Refer to the lower belt covers on page 27 . To remove and 2.
  • Page 68 To remove 10. Remove the bracket on the PTO clutch. 3. Remove the lower belt covers. Refer to the lower belt covers on page 27 . 4. Loosen the spring on the belt tensioner. 11. Disconnect the connector of the PTO clutch. 5.
  • Page 69 11. Install the main belt in opposite sequence. 3. Remove the side covers on the cutting deck. Refer To remove and install the side cover of the cutting Note: Make sure that the pulleys are easy to turn to deck on page 25 . prevent wear on the belt.

  • Page 70: Troubleshooting

    10 Troubleshooting 10.1 Troubleshooting schedule Fault Possible Steps Troubleshooting Action cause The start motor does not PTO clutch en- Make sure that the PTO button is start when the key gaged. pushed down. switch is turned to START. Parking brake Do a check of parking brake.
  • Page 71 Fault Possible Steps Troubleshooting Action cause Do a check that the grounding point Tighten the ground ca- on the engine is fully tightened. ble. The start motor operates Wiring fault. Do a check that the yellow cable to Repair the cable or re- correctly but the product the engine gets voltage from the bat- place the wiring.

  • Page 72: Technical Data

    11 Technical data 11.1 Technical data R419TsX AWD R420TsX AWD Dimensions Length without cutting deck, mm 2116 2116 Width without cutting deck, mm Height, mm 1178 1178 Weight without cutting deck, with empty tanks, kg Wheel base, mm Track width, front, mm...
  • Page 73 R419TsX AWD R420TsX AWD Electrode gap, mm/inch 0.75/0.030 0.75/0.030 Cutting deck Type Combi 103 Combi 103 Combi 112 Combi 112 Combi 122 Noise emissions R419TsX AWD R420TsX AWD Sound power level, measured dB(A) Combi 103 Combi 112 Combi 122 Sound power level, guaranteed dB(A)

  • Page 74: Tightening Torques

    11.2 Tightening torques R419TsX AWD R420TsX AWD Tightening torques Steering drive 5-10 Nm / 3.5-7 lb ft 5-10 Nm / 3.5-7 lb ft Steering cable pulley 20-30 Nm / 14-21 lb ft 20-30 Nm / 14-21 lb ft Belt pulley...
  • Page 75 914 - 003 - 28.03.2019 Technical data - 75...
  • Page 76 1141018-26 2019-03-28...

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R420tsx awd

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